This is the scene where Hamlet meets the ghost. As Marcellus, Horatio and Hamlet wait for the ghost to appear, Hamlet tells them about how other countries look down on Denmark because of the way they act (more specifically, loud parties and drunkenness). The ghost then appears and beckons Hamlet forward to follow him. Hamlet tries to follow, but is held back by Marcellus and Horatio as they believe it will lead him to his death or drive him mad. They only let go once Hamlet draws his sword and threatens to turn them into ghosts (he means he would kill them if they held him back once more). Hamlet follows the ghost and then reluctantly, Marcellus and Horatio follow as well.